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Mathematics 7 Online
OpenStudy (anonymous):

Hemoglobin Level Age Less than 25 Years 25–35 Years Above 35 Years Total Less than 9 21 32 76 129 Between 9 and 11 49 52 46 147 Above 11 69 44 40 154 Total 139 128 162 429 Based on the data in the two-way table, the probability of being older than 25 years and having a hemoglobin level above 11 is . The probability of having a hemoglobin level above 11 is . Being older than 25 years and having a hemoglobin level above 11 dependent on each other

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